Hard-to-reproduce GC bug

[Sean Kelly]

dsimcha wrote:
> I'm having issues where it appears that the D2 druntime GC ignores roots
> located in thread-local storage when determining what objects are alive.  This
> leads to spurious deletion of objects in certain cases.  This is clearly a GC
> issue, since disabling the GC solves it, but I can't figure out how to
> reproduce it in a canonical way.  Has anyone else run into anything like this?

Weird.  The actual storage for TLS in druntime is an array of void* 
within the Thread class.  I can't imagine that it wouldn't be scanned by 
the GC.  Do you have a reproducible test case?


Sean